"I think CR7 has everything to take us to the next level and do important things this season.

"Ronaldo is a really important player, but we also have Dybala and other important players. I've played with Neymar, so it's not totally new for me to play with someone at [Ronaldo's] level.

"Everyone has welcomed him and we know how much he can improve us. We can't hide it, it's clear."

Discussing his career at Juve under head coach Massimiliano Allegri, Costa – who joined the Italian champions permanently from Bayern Munich in the off-season – added: "I think Juventus know how to win a player over.

"Once a player makes a decision and the deal is closed, the club treat them as a member of the family. I think the Juventus family are most important. It's a world where I've learned to live.

"Allegri's a coach with a great passion for the defensive side of the game and, for me, it was really important because I'm a player used to going forward a lot and, working on the defensive side, it's made me a more complete player. He's played an important role in my career."